I'm sure there are some Marvel characters who can compare to DC's characters, but on the whole DC superheroes are just far too powerful.
Same goes with DC supervillains, they pretty much trounce Marvel supervillains.
Ryuu, I'll admit that Spiderman is pretty awesome, but in my opinion he just can't compare to Batman. Batman has everything, amazing villains, zero superpowers, intelligence, skill in just about everything, and he is a natural leader.
Mostly though it is Batman's relationship with his villains that makes him so much more awesome than any other super hero (even DC superheroes fear and respect Batman)